Source

** Please do not run setup.py **
On Windows, we prefer you use the more recent stable release, which
can always be found at http://tortoisehg.org
On Linux, the suggested methods for using TortoiseHg are to either
install a package built for your distribution, or run directly out of a
cloned repository.
For source install details, see:
https://bitbucket.org/tortoisehg/thg/wiki/developers/Home